# Physics Tutorial 18.4 - Relativistic Transformation of Velocity and the Relativistic Doppler Effect

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There are 2 lessons in this physics tutorial covering Relativistic Transformation of Velocity and the Relativistic Doppler Effect. The tutorial starts with an introduction to Relativistic Transformation of Velocity and the Relativistic Doppler Effect and is then followed with a list of the separate lessons, the tutorial is designed to be read in order but you can skip to a specific lesson or return to recover a specific physics lesson as required to build your physics knowledge of Relativistic Transformation of Velocity and the Relativistic Doppler Effect. you can access all the lessons from this tutorial below.

In this Physics tutorial, you will learn:

• What is the relationship between velocities measured in two different inertial systems of reference?
• What is the relationship between values of light wavelength measured in two different inertial systems of reference?
• The same for frequencies of light waves
• How does Relativistic Doppler Effect helps in understanding how the universe works?

## Introduction

So far, we have discussed a number of new concepts that are applied in relativistic events. These concepts are very helpful in finding a relationship between the velocities of particles measured in different inertial frames of reference. Certainly, we must find the same value for the speed of light in all inertial systems considered. This element will act as a touchstone for the accuracy of this new theory.

We will see in this tutorial that in relativistic events, we cannot use anymore the classical formulae for velocity. In addition, we will recall the Doppler Effect of light waves discussed in tutorial 12.7 (The Doppler Effect) but now applying a relativistic approach. Obviously, the findings when using these two approaches must be the same.

Please select a specific "Relativistic Transformation of Velocity and the Relativistic Doppler Effect" lesson from the table below, review the video tutorial, print the revision notes or use the practice question to improve your knowledge of this physics topic.

Relativity Learning Material
Tutorial IDPhysics Tutorial TitleTutorialVideo
Tutorial
Revision
Notes
Revision
Questions
18.4Relativistic Transformation of Velocity and the Relativistic Doppler Effect
Lesson IDPhysics Lesson TitleLessonVideo
Lesson
18.4.1Relativistic Transformation of Velocity
18.4.2The Relativistic Doppler Effect

## Whats next?

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4. Check your calculations for Relativity questions with our excellent Relativity calculators which contain full equations and calculations clearly displayed line by line. See the Relativity Calculators by iCalculator™ below.
5. Continuing learning relativity - read our next physics tutorial: Lorentz Transformations

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